When replacing the exhaust parts (manifolds, risers, elbows) on your marine engine, the best way to make sure you find the proper replacements is to look at your current exhaust parts and write down the casting numbers from each. In some cases the casting numbers may be on the engine side of the part, making it difficult to see prior to removal.

With the casting numbers handy, go to the Fredwarner Home Page and in the search field at the top, search for each one (one at a time) to see if a compatible part is available. If nothing comes up, you can also try the Sierra SONAR tool, which matches OEM and aftermarket part numbers to Sierra parts.